It is shortly after the fierce battle at Yoshiwara Shngri-la. Shinpachi and Kagura, having faced powerful foes in Hosen and Kamui unlike any they have encountered, are training hard after realizing their lack of strength. Both announce to Gintoki their determination to become stronger. But Gintoki declines to become involved, saying it’s a pain. Learning of the situation, Otae and Hasegawa share their training secrets, but…?
He's bringing up shady topics just because he doesn't want to train.
Está poniendo excusas malas 
solo porque no quiere entrenar.
Ele fica falando de assuntos obscuros 
por preguiça de treinar.